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1 /* |
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2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation |
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15 * |
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16 */ |
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17 |
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18 #include <usbotgdefs.h> |
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19 |
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20 #include "cusbbusactivityobserver.h" |
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21 |
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22 #include "definitions.h" |
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23 #include "debug.h" |
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24 #include "panic.h" |
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25 |
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26 // --------------------------------------------------------------------------- |
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27 // |
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28 // --------------------------------------------------------------------------- |
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29 // |
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30 CUsbBusActivityObserver::CUsbBusActivityObserver() : |
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31 CActive(EPriorityStandard) |
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32 { |
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33 CActiveScheduler::Add(this); |
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34 } |
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35 |
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36 // --------------------------------------------------------------------------- |
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37 // |
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38 // --------------------------------------------------------------------------- |
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39 // |
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40 void CUsbBusActivityObserver::ConstructL() |
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41 { |
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42 LOG_FUNC |
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43 |
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44 LEAVEIFERROR(iBusActivity.Attach(KUidUsbManCategory, |
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45 KUsbOtgConnectionIdleProperty)); |
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46 |
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47 } |
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48 |
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49 // --------------------------------------------------------------------------- |
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50 // |
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51 // --------------------------------------------------------------------------- |
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52 // |
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53 CUsbBusActivityObserver* CUsbBusActivityObserver::NewL() |
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54 { |
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55 LOG_FUNC |
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56 |
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57 CUsbBusActivityObserver* self = new (ELeave) CUsbBusActivityObserver(); |
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58 CleanupStack::PushL(self); |
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59 self->ConstructL(); |
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60 CleanupStack::Pop(self); |
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61 return self; |
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62 } |
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63 |
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64 // --------------------------------------------------------------------------- |
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65 // |
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66 // --------------------------------------------------------------------------- |
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67 // |
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68 CUsbBusActivityObserver::~CUsbBusActivityObserver() |
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69 |
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70 { |
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71 LOG_FUNC |
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72 |
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73 Cancel(); |
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74 |
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75 iBusActivity.Close(); |
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76 |
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77 iObservers.Close(); |
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78 |
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79 } |
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80 |
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81 // --------------------------------------------------------------------------- |
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82 // |
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83 // --------------------------------------------------------------------------- |
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84 // |
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85 CUsbBusActivityObserver::TBusActivity CUsbBusActivityObserver::BusActivity() |
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86 { |
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87 |
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88 TInt val(0); |
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89 |
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90 TInt err = iBusActivity.Get(val); |
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91 |
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92 if (KErrNone != err) |
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93 { |
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94 LOG("ECanNotGetBusActivityProperty" ); |
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95 PANIC( ECanNotGetBusActivityProperty); |
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96 } |
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97 |
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98 return (0 == val ? EBusActive : EBusIdle); |
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99 |
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100 } |
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101 |
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102 // --------------------------------------------------------------------------- |
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103 // |
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104 // --------------------------------------------------------------------------- |
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105 // |
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106 void CUsbBusActivityObserver::SubscribeL(MUsbBusActivityObserver& aObserver) |
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107 { |
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108 LOG_FUNC |
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109 |
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110 // check if the same observer already exist in a list |
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111 if (KErrNotFound != iObservers.Find(&aObserver)) |
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112 { |
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113 LOG( "Observer already exists" ); |
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114 PANIC( EObserverAlreadyExists); |
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115 return; |
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116 } |
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117 iObservers.AppendL(&aObserver); |
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118 |
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119 if (KFirst == iObservers.Count()) // first item |
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120 { |
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121 iBusActivity.Subscribe(iStatus); |
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122 SetActive(); |
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123 |
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124 } |
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125 } |
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126 |
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127 // --------------------------------------------------------------------------- |
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128 // |
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129 // --------------------------------------------------------------------------- |
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130 // |
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131 void CUsbBusActivityObserver::UnsubscribeL(MUsbBusActivityObserver& aObserver) |
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132 { |
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133 LOG_FUNC |
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134 |
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135 TInt i(iObservers.Find(&aObserver)); |
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136 if (KErrNotFound == i) |
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137 { |
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138 LOG( "Observer not found" ); |
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139 PANIC( ECanNotFindBusActivityObserver); |
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140 return; |
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141 } |
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142 |
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143 iObservers.Remove(i); |
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144 |
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145 if (0 == iObservers.Count()) // no observers anymore |
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146 { |
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147 // cancel pending request |
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148 Cancel(); |
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149 } |
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150 } |
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151 |
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152 // --------------------------------------------------------------------------- |
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153 |
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154 // --------------------------------------------------------------------------- |
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155 // |
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156 void CUsbBusActivityObserver::RunL() |
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157 { |
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158 LOG_FUNC |
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159 |
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160 LOG1( "iStatus = %d" , iStatus.Int()); |
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161 |
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162 // if error occured, inform observers |
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163 if (KErrNone != iStatus.Int()) |
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164 { |
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165 for (TInt i(0); i < iObservers.Count(); ++i) |
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166 { |
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167 iObservers[i]->BusActivityErrorL(iStatus.Int()); |
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168 } |
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169 } |
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170 |
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171 // re-issue request first |
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172 iBusActivity.Subscribe(iStatus); |
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173 SetActive(); |
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174 |
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175 // then process property change |
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176 TBusActivity state(BusActivity()); |
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177 |
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178 switch (state) |
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179 { |
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180 case EBusIdle: |
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181 { |
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182 LOG("BusIdle"); |
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183 |
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184 for (TInt i(0); i < iObservers.Count(); ++i) |
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185 { |
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186 iObservers[i]->BusIdleL(); |
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187 } |
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188 break; |
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189 } |
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190 |
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191 case EBusActive: |
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192 { |
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193 LOG("BusActive"); |
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194 |
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195 for (TInt i(0); i < iObservers.Count(); ++i) |
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196 { |
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197 iObservers[i]->BusActiveL(); |
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198 } |
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199 break; |
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200 } |
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201 |
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202 default: |
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203 { |
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204 LOG("WrongBusState" ); |
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205 PANIC( EWrongBusState); |
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206 } |
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207 } |
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208 |
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209 } |
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210 |
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211 // --------------------------------------------------------------------------- |
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212 // |
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213 // --------------------------------------------------------------------------- |
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214 // |
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215 void CUsbBusActivityObserver::DoCancel() |
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216 { |
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217 iBusActivity.Cancel(); |
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218 } |
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219 |
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220 // --------------------------------------------------------------------------- |
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221 // |
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222 // --------------------------------------------------------------------------- |
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223 // |
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224 TInt CUsbBusActivityObserver::RunError(TInt aError) |
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225 { |
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226 LOG_FUNC |
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227 |
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228 LOG1( "aError = %d", aError ); |
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229 |
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230 // try to continue |
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231 return KErrNone; |
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232 |
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233 } |
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234 |